Hello Venus is finally back!

The girls dropped "Mysterious" off new album, 'Mystery of VENUS'!  The song starts off with a catchy, steady beat that is laced throughout the rest of the song, which has a jazzy vibe and the hook, "Mysterious, mysterious, so curious, so curious."  That whistling will be hard to get out of your head!  And the MV features the handsome Seo Kang Jun, as promised, and Cha Eun Woo.

Check it out below!

SEE ALSO: Koreans are siding with Min Hee Jin over HYBE & Bang Si Hyuk following her emotional press conference